986 Coilpack screws
 

Didn't see a thread on this topic, so sharing some info. Not very often, but occasionally, the socket head cap screws holding in the ignition coil packs become stripped inside the hex head.
Pelican lists these for $1.75 each, BUT, they don't keep any in stock. They have to special order them from Porsche in Germany. I could not afford to leave my car on jack stands and wait for these to come from Germany. I did a bit of on line research after measuring one of the screws. The screw is in fact a standard M6-1 x 25mm socket head cap screw. I ordered some from Amazon in 302 stainless and when they arrived today, I confirmed they are an exact match. Here is the Amazon description.

Metric 304 Stainless Steel Socket Head Cap Screw, Hex Socket Drive, M6-1.00, 25 mm Length

Thanks for sharing, nice early contribution. I will add the Snap-On stubby M6mm hex socket was my solution to this problem.

Perfect! I noticed that I was missing two of these screws when I replaced my spark plugs (two coil packs only had one screw each).